Photoelectron Angular Distributions from Liquid Water: Effects of Electron Scattering

被引：146

作者：

Thuermer, Stephan ^{[1
]}

Seidel, Robert ^{[2
]}

Faubel, Manfred ^{[3
]}

Eberhardt, Wolfgang ^{[1
,4
,5
]}

Hemminger, John C. ^{[6
]}

Bradforth, Stephen E. ^{[2
]}

Winter, Bernd ^{[1
]}

机构：

[1] Helmholtz Zentrum Berlin Mat & Energie, Joint Lab Ultrafast Dynam Solut & Interfaces, D-12489 Berlin, Germany

[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

[3] Max Planck Inst Dynam & Selbstorg, D-37073 Gottingen, Germany

[4] Tech Univ Berlin, Inst Opt & Atomare Phys, D-10623 Berlin, Germany

[5] DESY, Ctr Free Elect Laser Sci CFEL, D-122607 Hamburg, Germany

[6] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 17期

基金：

美国国家科学基金会;

关键词：

MONTE-CARLO-SIMULATION; SOLVATED ELECTRONS; ENERGY-DEPENDENCE; CROSS-SECTIONS; PHOTOEMISSION; EXCITATION; SURFACE; RANGE; BULK; H2O;

D O I：

10.1103/PhysRevLett.111.173005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Photoelectron angular distributions (PADs) from the liquid-water surface and from bulk liquid water are reported for water oxygen-1s ionization. Although less so than for the gas phase, the measured PADs from the liquid are remarkably anisotropic, even at electron kinetic energies lower than 100 eV, when elastic scattering cross sections for the outgoing electrons with other water molecules are large. The PADs reveal that theoretical estimates of the inelastic mean free path are likely too long at low kinetic energies, and hence the electron probing depth in water, near threshold ionization, appears to be considerably smaller than so far assumed.

引用

页数：5

共 36 条

[1] Solvated electrons at the water-air interface: surface versus bulk signal in low kinetic energy photoelectron spectroscopy [J].

Buchner, Franziska ;

Schultz, Thomas ;

Luebcke, Andrea .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (16) :5837-5842

[2] Measurements of elastic electron scattering by water vapour extended to backward angles [J].

Cho, H ;

Park, YS ;

Tanaka, H ;

Buckman, SJ .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2004, 37 (03) :625-634

[3] ANGULAR DISTRIBUTION OF PHOTOELECTRONS [J].

COOPER, J ;

ZARE, RN .

JOURNAL OF CHEMICAL PHYSICS, 1968, 48 (02) :942-&

[4] Excitation-energy dependence of the mechanism for two-photon ionization of liquid H2O and D2O from 8.3 to 12.4 eV [J].

Elles, Christopher G. ;

Jailaubekov, Askat E. ;

Crowell, Robert A. ;

Bradforth, Stephen E. .

JOURNAL OF CHEMICAL PHYSICS, 2006, 125 (04)

[5] Inelastic collision characteristics of electrons in liquid water [J].

Emfietzoglou, D ;

Moscovitch, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2002, 193 :71-78

[6]

Ghosal S, 2005, SCIENCE, V307, P563, DOI 10.1126/science.1106525

[7]

Goudsmit S, 1940, PHYS REV, V57, P24, DOI 10.1103/PhysRev.57.24

[8] The complete optical spectrum of liquid water measured by inelastic x-ray scattering [J].

Hayashi, H ;

Watanabe, N ;

Udagawa, Y ;

Kao, CC .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2000, 97 (12) :6264-6266

[9]

Hufner S., 1995, Photoelectron Spectroscopy: Principles and Applications

[10] Cross sections for electron collisions with water molecules [J].

Itikawa, Y ;

Mason, N .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 2005, 34 (01) :1-22

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